While it is mostly parade stock, we cannot ignore that yes, regardless of their issues with their ability to piece shit together properly, the SU-57 is absolutely 5th gen

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They have stealth capabilities, internal bays with a decent payload cap of 7500kg, AESA radar, vectored thrust and other maneuvarbility upgrades, DIRCM, and other such advanced inclusions.

This is definitely 5th gen qualifying in its design build.

yes russia sucks. no it is not a propaganda piece to understand what weapons they have available and what risk they pose. While I am sure they don't have many in operation, i suspect they have a few which meet their design build. Pretending they don't exist doesn't change anything